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Note 9 - Net Loss Per Share (Tables)
9 Months Ended
Jul. 31, 2020
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
  

Three months ended

  

Nine months ended

 
  

July 31,

  

July 31,

 
  

2020

  

2019

  

2020

  

2019

 

Net loss (numerator)

 $(1,433,830) $(1,085,294) $(5,714,899) $(5,012,739)

Shares (denominator)

  7,352,673   7,319,274   7,354,579   7,409,465 

Basic and diluted net loss per share

 $(0.20) $(0.15) $(0.78) $(0.68)